474 lines
14 KiB
Go
474 lines
14 KiB
Go
// Copyright 2021 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package freeipmi
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import (
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"bufio"
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"bytes"
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"crypto/rand"
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"encoding/csv"
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"encoding/hex"
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"fmt"
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"math"
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"os"
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"os/exec"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"syscall"
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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)
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var (
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ipmiDCMIPowerMeasurementRegex = regexp.MustCompile(`^Power Measurement\s*:\s*(?P<value>Active|Not\sAvailable).*`)
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ipmiDCMICurrentPowerRegex = regexp.MustCompile(`^Current Power\s*:\s*(?P<value>[0-9.]*)\s*Watts.*`)
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ipmiChassisPowerRegex = regexp.MustCompile(`^System Power\s*:\s(?P<value>.*)`)
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ipmiChassisDriveFaultRegex = regexp.MustCompile(`^Drive Fault\s*:\s(?P<value>.*)`)
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ipmiChassisCoolingFaultRegex = regexp.MustCompile(`^Cooling/fan fault\s*:\s(?P<value>.*)`)
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ipmiSELEntriesRegex = regexp.MustCompile(`^Number of log entries\s*:\s(?P<value>[0-9.]*)`)
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ipmiSELFreeSpaceRegex = regexp.MustCompile(`^Free space remaining\s*:\s(?P<value>[0-9.]*)\s*bytes.*`)
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ipmiSELEventRegex = regexp.MustCompile(`^(?P<id>[0-9]+),\s*(?P<date>[^,]*),(?P<time>[^,]*),(?P<name>[^,]*),(?P<type>[^,]*),(?P<state>[^,]*),(?P<event>[^,]*)$`)
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bmcInfoFirmwareRevisionRegex = regexp.MustCompile(`^Firmware Revision\s*:\s*(?P<value>[0-9.]*).*`)
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bmcInfoSystemFirmwareVersionRegex = regexp.MustCompile(`^System Firmware Version\s*:\s*(?P<value>[0-9.]*).*`)
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bmcInfoManufacturerIDRegex = regexp.MustCompile(`^Manufacturer ID\s*:\s*(?P<value>.*)`)
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bmcWatchdogTimerStateRegex = regexp.MustCompile(`^Timer:\s*(?P<value>Running|Stopped)`)
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bmcWatchdogTimerUseRegex = regexp.MustCompile(`^Timer Use:\s*(?P<value>.*)`)
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bmcWatchdogTimerLoggingRegex = regexp.MustCompile(`^Logging:\s*(?P<value>Enabled|Disabled)`)
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bmcWatchdogTimeoutActionRegex = regexp.MustCompile(`^Timeout Action:\s*(?P<value>.*)`)
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bmcWatchdogPretimeoutInterruptRegex = regexp.MustCompile(`^Pre-Timeout Interrupt:\s*(?P<value>.*)`)
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bmcWatchdogPretimeoutIntervalRegex = regexp.MustCompile(`^Pre-Timeout Interval:\s*(?P<value>[0-9.]*)\s*seconds.*`)
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bmcWatchdogInitialCountdownRegex = regexp.MustCompile(`^Initial Countdown:\s*(?P<value>[0-9.]*)\s*seconds.*`)
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bmcWatchdogCurrentCountdownRegex = regexp.MustCompile(`^Current Countdown:\s*(?P<value>[0-9.]*)\s*seconds.*`)
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)
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// Result represents the outcome of a call to one of the FreeIPMI tools.
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// It can be used with other functions in this package to extract data.
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type Result struct {
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output []byte
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err error
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}
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// SensorData represents the reading of a single sensor.
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type SensorData struct {
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ID int64
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Name string
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Type string
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State string
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Value float64
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Unit string
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Event string
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}
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// SELEvent represents log line from SEL
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type SELEventData struct {
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ID int64
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Date string
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Time string
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Name string
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Type string
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State string
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Event string
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}
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// EscapePassword escapes a password so that the result is suitable for usage in a
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// FreeIPMI config file.
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func EscapePassword(password string) string {
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return strings.Replace(password, "#", "\\#", -1)
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}
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func pipeName() (string, error) {
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randBytes := make([]byte, 16)
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_, err := rand.Read(randBytes)
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if err != nil {
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return "", err
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}
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return filepath.Join(os.TempDir(), "ipmi_exporter-"+hex.EncodeToString(randBytes)), nil
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}
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func contains(s []int64, elm int64) bool {
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for _, a := range s {
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if a == elm {
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return true
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}
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}
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return false
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}
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func getValue(ipmiOutput []byte, regex *regexp.Regexp) (string, error) {
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for _, line := range strings.Split(string(ipmiOutput), "\n") {
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match := regex.FindStringSubmatch(line)
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if match == nil {
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continue
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}
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for i, name := range regex.SubexpNames() {
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if name != "value" {
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continue
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}
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return match[i], nil
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}
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}
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return "", fmt.Errorf("could not find value in output: %s", string(ipmiOutput))
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}
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func freeipmiConfigPipe(config string, logger log.Logger) (string, error) {
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content := []byte(config)
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pipe, err := pipeName()
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if err != nil {
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return "", err
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}
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err = syscall.Mkfifo(pipe, 0600)
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if err != nil {
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return "", err
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}
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go func(file string, data []byte) {
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f, err := os.OpenFile(file, os.O_WRONLY|os.O_CREATE|os.O_APPEND, os.ModeNamedPipe)
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if err != nil {
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level.Error(logger).Log("msg", "Error opening pipe", "error", err)
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}
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if _, err := f.Write(data); err != nil {
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level.Error(logger).Log("msg", "Error writing config to pipe", "error", err)
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}
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f.Close()
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}(pipe, content)
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return pipe, nil
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}
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func Execute(cmd string, args []string, config string, target string, logger log.Logger) Result {
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pipe, err := freeipmiConfigPipe(config, logger)
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if err != nil {
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return Result{nil, err}
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}
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defer func() {
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if err := os.Remove(pipe); err != nil {
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level.Error(logger).Log("msg", "Error deleting named pipe", "error", err)
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}
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}()
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args = append(args, "--config-file", pipe)
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if target != "" {
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args = append(args, "-h", target)
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}
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level.Debug(logger).Log("msg", "Executing", "command", cmd, "args", fmt.Sprintf("%+v", args))
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out, err := exec.Command(cmd, args...).CombinedOutput()
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if err != nil {
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err = fmt.Errorf("error running %s: %s", cmd, err)
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}
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return Result{out, err}
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}
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func GetSensorData(ipmiOutput Result, excludeSensorIds []int64) ([]SensorData, error) {
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var result []SensorData
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if ipmiOutput.err != nil {
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return result, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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r := csv.NewReader(bytes.NewReader(ipmiOutput.output))
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fields, err := r.ReadAll()
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if err != nil {
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return result, err
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}
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for _, line := range fields {
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var data SensorData
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data.ID, err = strconv.ParseInt(line[0], 10, 64)
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if err != nil {
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return result, err
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}
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if contains(excludeSensorIds, data.ID) {
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continue
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}
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data.Name = line[1]
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data.Type = line[2]
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data.State = line[3]
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value := line[4]
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if value != "N/A" {
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data.Value, err = strconv.ParseFloat(value, 64)
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if err != nil {
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return result, err
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}
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} else {
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data.Value = math.NaN()
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}
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data.Unit = line[5]
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data.Event = strings.Trim(line[6], "'")
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result = append(result, data)
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}
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return result, err
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}
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func GetCurrentPowerConsumption(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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// Check for Power Measurement are avail
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value, err := getValue(ipmiOutput.output, ipmiDCMIPowerMeasurementRegex)
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if err != nil {
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return -1, err
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}
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// When Power Measurement in 'Active' state - we can get watts
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if value == "Active" {
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value, err := getValue(ipmiOutput.output, ipmiDCMICurrentPowerRegex)
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if err != nil {
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return -1, err
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}
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return strconv.ParseFloat(value, 64)
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}
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return -1, nil
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}
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func GetChassisPowerState(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, ipmiChassisPowerRegex)
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if err != nil {
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return -1, err
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}
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if value == "on" {
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return 1, err
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}
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return 0, err
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}
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func GetChassisDriveFault(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, ipmiChassisDriveFaultRegex)
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if err != nil {
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return -1, err
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}
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if value == "false" {
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return 1, err
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}
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return 0, err
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}
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func GetChassisCoolingFault(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, ipmiChassisCoolingFaultRegex)
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if err != nil {
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return -1, err
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}
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if value == "false" {
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return 1, err
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}
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return 0, err
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}
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func GetBMCInfoFirmwareRevision(ipmiOutput Result) (string, error) {
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// Workaround for an issue described here: https://github.com/prometheus-community/ipmi_exporter/issues/57
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// The command may fail, but produce usable output (minus the system firmware revision).
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// Try to recover gracefully from that situation by first trying to parse the output, and only
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// raise the initial error if that also fails.
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value, err := getValue(ipmiOutput.output, bmcInfoFirmwareRevisionRegex)
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if err != nil {
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if ipmiOutput.err != nil {
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return "", fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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}
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return value, err
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}
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func GetBMCInfoManufacturerID(ipmiOutput Result) (string, error) {
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// Workaround for an issue described here: https://github.com/prometheus-community/ipmi_exporter/issues/57
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// The command may fail, but produce usable output (minus the system firmware revision).
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// Try to recover gracefully from that situation by first trying to parse the output, and only
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// raise the initial error if that also fails.
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value, err := getValue(ipmiOutput.output, bmcInfoManufacturerIDRegex)
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if err != nil {
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if ipmiOutput.err != nil {
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return "", fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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}
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return value, err
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}
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func GetBMCInfoSystemFirmwareVersion(ipmiOutput Result) (string, error) {
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if ipmiOutput.err != nil {
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return "", fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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return getValue(ipmiOutput.output, bmcInfoSystemFirmwareVersionRegex)
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}
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func GetSELInfoEntriesCount(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, ipmiSELEntriesRegex)
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if err != nil {
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return -1, err
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}
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return strconv.ParseFloat(value, 64)
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}
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func GetSELInfoFreeSpace(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, ipmiSELFreeSpaceRegex)
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if err != nil {
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return -1, err
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}
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return strconv.ParseFloat(value, 64)
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}
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func GetRawOctets(ipmiOutput Result) ([]string, error) {
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if ipmiOutput.err != nil {
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return nil, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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strOutput := strings.Trim(string(ipmiOutput.output), " \r\n")
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if !strings.HasPrefix(strOutput, "rcvd: ") {
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return nil, fmt.Errorf("unexpected raw response: %s", strOutput)
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}
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octets := strings.Split(strOutput[6:], " ")
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return octets, nil
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}
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func GetBMCWatchdogTimerState(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, bmcWatchdogTimerStateRegex)
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if err != nil {
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return -1, err
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}
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if value == "Running" {
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return 1, err
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}
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return 0, err
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}
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func GetBMCWatchdogTimerUse(ipmiOutput Result) (string, error) {
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if ipmiOutput.err != nil {
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return "", fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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return getValue(ipmiOutput.output, bmcWatchdogTimerUseRegex)
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}
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func GetBMCWatchdogLoggingState(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, bmcWatchdogTimerLoggingRegex)
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if err != nil {
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return -1, err
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}
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if value == "Enabled" {
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return 1, err
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}
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return 0, err
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}
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func GetBMCWatchdogTimeoutAction(ipmiOutput Result) (string, error) {
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if ipmiOutput.err != nil {
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return "", fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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return getValue(ipmiOutput.output, bmcWatchdogTimeoutActionRegex)
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}
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func GetBMCWatchdogPretimeoutInterrupt(ipmiOutput Result) (string, error) {
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if ipmiOutput.err != nil {
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return "", fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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return getValue(ipmiOutput.output, bmcWatchdogPretimeoutInterruptRegex)
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}
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func GetBMCWatchdogPretimeoutInterval(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, bmcWatchdogPretimeoutIntervalRegex)
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if err != nil {
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return -1, err
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}
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return strconv.ParseFloat(value, 64)
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}
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func GetBMCWatchdogInitialCountdown(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, bmcWatchdogInitialCountdownRegex)
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if err != nil {
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return -1, err
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}
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return strconv.ParseFloat(value, 64)
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}
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func GetBMCWatchdogCurrentCountdown(ipmiOutput Result) (float64, error) {
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if ipmiOutput.err != nil {
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return -1, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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value, err := getValue(ipmiOutput.output, bmcWatchdogCurrentCountdownRegex)
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if err != nil {
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return -1, err
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}
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return strconv.ParseFloat(value, 64)
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}
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func GetSELEvents(ipmiOutput Result) ([]SELEventData, error) {
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if ipmiOutput.err != nil {
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return nil, fmt.Errorf("%s: %s", ipmiOutput.err, ipmiOutput.output)
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}
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scanner := bufio.NewScanner(bytes.NewReader(ipmiOutput.output))
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events := []SELEventData{}
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for scanner.Scan() {
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line := scanner.Text()
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match := ipmiSELEventRegex.FindStringSubmatch(line)
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// ignore lines which does not matches event regexp
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if match == nil {
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continue
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}
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result := make(map[string]string)
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for i, name := range ipmiSELEventRegex.SubexpNames() {
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if i != 0 && name != "" {
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result[name] = match[i]
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}
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}
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id, err := strconv.ParseInt(result["id"], 10, 64)
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// ignore lines which does not starts with number
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if err != nil {
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continue
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}
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events = append(events, SELEventData{
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ID: id,
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Date: result["date"],
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Time: result["time"],
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Name: result["name"],
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Type: result["type"],
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State: result["state"],
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Event: result["event"],
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})
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}
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return events, nil
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}
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